#include <stdio.h>
void main(){
	int x = 1, y = 2;{
		int x = 2;
		{ int x = 3;
		  printf("x=%d,y=%d\n", x,y);
		}
		printf("x=%d,y=%d\n", x, y);
	}
	printf("x=%d,y=%d\n", x, y);
}